XY-485 RS485 to TTL Converter Adapter Module

XY-485 TTL to RS485 Converter Module – Wide Voltage, Industrial

This RS485 to TTL signal conversion module is designed with a wide voltage power supply range of 3.0V to 30V, making it fully compatible with both 3.3V and 5.0V systems and signal levels. It features a terminal block and included silicone wires for easy, direct wiring, and is built with high-quality imported chips that offer robust performance, lightning protection, and strong anti-interference capabilities, making it suitable for industrial environments.

The module enables bidirectional conversion between TTL and RS485 signals. It’s important to note that RS485 is a half-duplex communication protocol, meaning data can travel in both directions, but not simultaneously. Communication must alternate, with each side taking turns as transmitter and receiver.

The module supports automatic flow control, automatically switching between transmit and receive modes. This allows it to operate just as easily as a standard serial port, with no need for manual direction control. It supports baud rates from 110 to 256,000 bps, providing flexibility for various communication requirements.

• Wide voltage power supply: Operates from 3.0V to 30V (maximum limit: 33V). Recommended operating range is within 30V; minimum required voltage is above 2.8V.

• Signal compatibility: Fully compatible with 3.3V and 5.0V logic levels, allowing seamless integration with a wide range of systems.

• High EMC and EMI performance: Excellent electromagnetic compatibility and interference resistance ensure stable operation in demanding environments.

• Industrial-grade design: Built with high-quality imported chips for superior performance, featuring strong anti-interference and lightning protection design.

• Extended operating range: Supports communication distances up to 1 km (tested with 850 meters of 2×1.5mm² cable). For distances over 800 meters, repeaters are recommended.

• Wide temperature tolerance: Operates reliably in harsh conditions, with a working temperature range of -40 °C to +85 °C.

• Convenient connectivity: Includes a terminal block and high-quality silicone wires for easy wiring.

• Signal status indicators: RXD and TXD LEDs provide real-time visual feedback of transmission and reception activity.

• Robust lightning and surge protection: Designed with enhanced protection for RS485 bus lines. "GND" pin can be connected to earth ground for improved protection in long-distance or industrial environments. For indoor or short-distance use, grounding is optional.

• Standard 2.54mm header pins: Supports easy integration and secondary development.

• Built-in 120Ω termination resistor: Enable by shorting jumper R0. Recommended for long-distance installations.

• Supports multi-node communication: Capable of connecting at least 40 nodes on the same RS485 network.

• Hot-swappable: Safe to connect or disconnect without communication lock-ups or signal failure.

• Optimized PCB layout: Anti-jamming alignment and copper routing help prevent signal degradation from interference.

Specification

• Model: XY-485

• Power Supply: 3.0V–30V DC (max 33V); min 2.8V

• Logic Level Compatibility: 3.3V / 5.0V systems

• Communication Interface: TTL ↔ RS485, half-duplex

• Baud Rate: Up to 256,000 bps

• Transmission Distance: Up to 1,000 meters (recommended ≤800m)

• Operating Temperature: -40 °C to +85 °C

• Protection Features: Lightning protection, anti-interference, EMC/EMI optimized

• Indicators: RXD / TXD LEDs

• Connectivity: Terminal block, silicone wires, standard 2.54mm header

• Termination Resistor: 120Ω (optional via jumper)

• Multi-Node Support: ≥40 nodes per RS485 network

• Hot-Swapping: Supported